Mitsubishi Electric FR-E700 Instruction Manual page 376

Communication operation and setting
● Data reading format
Communication request data from the computer to the inverter
Format
B
Reply data from the inverter to the computer when data is read (no data error detected)
Format
Reply data from the inverter to the computer when data is read (data error detected)
Format
Send data from the computer to the inverter during data read
Format
(No data error
detected)
(Data error
detected)
Indicate a control code (Refer to Tab. 6-69.)
Specify the inverter station numbers between H00 and H1F (stations 0 to 31) in hexadecimal.
When Pr. 123, Pr. 337 "Waiting time setting" ≠ 9999, create the communication request data
without "waiting time" in the data format. (The number of characters decreases by 1.)
CR, LF code
When data is transmitted from the computer to the inverter, codes CR (carriage return) and
LF (line feed) are automatically set at the end of a data group on some computers. In this
case, setting must also be made on the inverter according to the computer. Whether the CR
and LF codes will be present or absent can be selected using Pr. 124 "CR, LF selection".
6 - 236
Number of Characters
1 2 3 4
Inverter
ENQ Instruction
station
number
1 2
Inverter
E STX station
number
Inverter
E1 STX station
number
Inverter
E2 STX station
number
Number of Characters
1 2
Inverter
D NAK station
number
Number of Characters
1 2
C Inverter
ACK station
number
F Inverter
NAK station
number
5 6 7 8
Wait-
ing
Sum check
code
time
Number of Characters
3 4 5 6
Read data
Read data ETX
Read data
3 4 5
Error
code
3 4
9
7 8 9 10
ETX Sum check
Sum check
ETX
Parameter
11 12 13
Sum check